libmspack/cabextract mspack/chmd.c chmd_read_headers Filename null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in libmspack and cabextract. It has been classified as problematic. Affected by this vulnerability is the function chmd_read_headers of the file mspack/chmd.c. This manipulation as part of Filename causes null pointer dereference. This vulnerability is handled as CVE-2018-18585. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in libmspack and cabextract (unknown version) and classified as problematic. Affected by this vulnerability is the function chmd_read_headers of the file mspack/chmd.c. The manipulation as part of a Filename leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has '\0' as its first or second character (such as the "/\0" name).

The bug was discovered 10/23/2018. The weakness was released 10/23/2018 (Website). It is possible to read the advisory at bugs.debian.org. This vulnerability is known as CVE-2018-18585 since 10/22/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 118561 (openSUSE Security Update : libmspack (openSUSE-2018-1329)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197299 (Ubuntu Security Notification for Libmspack Vulnerabilities (USN-3814-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118561). Entries connected to this vulnerability are available at VDB-125850 and VDB-125852. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118561
Nessus Name: openSUSE Security Update : libmspack (openSUSE-2018-1329)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Patch: github.com

Timelineinfo

10/22/2018 🔍
10/22/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/30/2018 +7 days 🔍
10/31/2018 +1 days 🔍
05/30/2023 +1672 days 🔍

Sourcesinfo

Advisory: RHSA-2019:2049
Status: Confirmed

CVE: CVE-2018-18585 (🔍)
GCVE (CVE): GCVE-0-2018-18585
GCVE (VulDB): GCVE-100-125851
See also: 🔍

Entryinfo

Created: 10/23/2018 13:29
Updated: 05/30/2023 15:05
Changes: 10/23/2018 13:29 (71), 04/06/2020 08:08 (2), 05/30/2023 15:05 (5)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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